Histochemical evidence for the existence of skeletofusimotor (β) innervation in the primate

K. S K Murthy, W. D. Letbetter, E. Eidelberg, William Cameron, J. Petit

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A total of ten a motor axons which innervated the peroneus brevis muscle were isolated in two cynomolgus monkeys. In each experiment, the isolated α axons were stimulated collectively to deplete glycogen from their muscle units. The muscle was then frozen quickly, cut serially, and stained for glycogen. Of the 52 muscle spindles that were examined, zones of glycogen depletion were found in the intrafusal fibres of 32 spindles. The glycogen-depleted motor units included both fast-twitch and slow-twitch types. Depleted zones were observed in all three types of intrafusal muscle fibres. It was concluded that skeletofusimotor (β) efferents were among the stimulated motor axons. This finding constitutes the first anatomical evidence for the existence of β innervation in the primate.

Original languageEnglish (US)
Pages (from-to)186-190
Number of pages5
JournalExperimental Brain Research
Volume46
Issue number2
DOIs
StatePublished - May 1982
Externally publishedYes

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Glycogen
Primates
Axons
Muscles
Muscle Spindles
Macaca fascicularis

Keywords

  • \ Innervation
  • Glycogen depletion
  • Muscle spindles
  • Primate motor control
  • Skeletofusimotor efferents

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Histochemical evidence for the existence of skeletofusimotor (β) innervation in the primate. / Murthy, K. S K; Letbetter, W. D.; Eidelberg, E.; Cameron, William; Petit, J.

In: Experimental Brain Research, Vol. 46, No. 2, 05.1982, p. 186-190.

Research output: Contribution to journalArticle

Murthy, K. S K ; Letbetter, W. D. ; Eidelberg, E. ; Cameron, William ; Petit, J. / Histochemical evidence for the existence of skeletofusimotor (β) innervation in the primate. In: Experimental Brain Research. 1982 ; Vol. 46, No. 2. pp. 186-190.
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